492 GEOFFREY SMITH. 
lunbs flexed between fifth and sixth segments. No ooste- 
gites. No appendix interna on pleopods. Hepatic ceca 
numerous. Heart elongated, tubular. 
Largely as the result of Calman’s writings, the importance 
of Anaspides, both as the sole survivor of a group of 
Crustacea, otherwise known only from the Permo-Carboni- 
ferous seas of the northern hemisphere, and as the represen- 
tative of probably the most primitive Malacostracan division, 
became obvious, so that it was clearly desirable to learn more 
about its habits and internal anatomy, and to find out if 
other allied forms were still existing in the freshwaters of the 
southern hemisphere. 
In the autumn of 1907, at the suggestion and through the 
assistance of Professor G. C. Bourne, I went to 'l'asmania to 
investigate Anaspides. On arriving in Melbourne I met 
Mr. O. A. Sayce, of Melbourne University, and learnt that a 
few weeks before my arrival he had obtained some specimens 
of a freshwater Crustacean, which he believed to be closely 
related to Anaspides, from a small stream to the west of 
Melbourne.. Mr. Sayce has subsequently published an 
account of the animal, which he calls Koonunga cursor 
(10 and 11), belonging to a separate family, Koonungide of 
the Anaspidacea. Perhaps the most interesting point about 
this animal is the fact that, unlike Anaspides and all other 
Schizopods, it possesses sessile eyes, a characteristic which 
tends to break down the old distinction between Podopthal- 
mata and Kdriophthalmata, a distinction which Calman’s 
classification also ignores. 
My own investigations in Tasmania were directed chiefly 
towards the elucidation of the obscure points in the habits 
and internal anatomy of Anaspides tasmaniz, and a pre- 
liminary account (12) of these matters was published on my 
return in June, 1908. I was also able to report the discovery 
of a new species and genus of the Anaspidide, Paran- 
aspides lacustris, from the great Lake of Tasmania. As 
a result of my studies I inclined to the conclusion that the 
Anaspidacea, while possessing many peculiar features, were 
